草酸钾添加量对卷烟纸热解性能及主流烟气的影响

通过在卷烟纸上添加不同量的草酸钾,采用常规烟气分析、同步热分析,研究其对卷烟纸热解性能及主流烟气的影响.结果表明：在卷烟纸上添加草酸钾后对卷烟主流烟气中的焦油和CO有一定的降低作用,随着添加量的继续增加,抽吸口数、CO和焦油释放量均呈先下降后缓慢上升趋势;在草酸钾添加量为1.5%时,其降焦及降CO效率最高;随着草酸钾添加量的增加,卷烟纸热解起始温度降低,在200～300℃时反应活化能降低.

The Detection and Clinical Significance of Plasma D-dimer,vWF,Fibrinogen in Patients with Malignant Hematological Diseases

Objective To study the expression of the plasma d-dimer(D-D),von Willebrand factor(vWF),fibrinogen(Fbg) in the patients with malignant hematological diseases,and analyze the relationship between these three markers and the diseases.Methods The level of D-D,vWF and Fbg were tested in the 124 patients with malignant hematological diseases,which included the diseases such as acute leukemia,myeloproliferative neoplasms and malignant lymphoma.And the association of clinical features of the patients with the markers was analyzed.Results The level of D-D and vWF was much higher in the malignant hematological disesses than the controls.Although the fibrinogen was higher in the patients than the contrals,it was not statistically significant(P >0.001).The expressions of these markers of the different groups showed no difference.Conclusion Not only It is useful for D-D,vWF and Fbg to evaluate the state of procoagulation and fibrolysis in the patients with malignant hematological diseases,but also it is helpful to predict the prognosis.